Thanks for everyone's support. I will add that in my opinion, I think it had a lot to do with the superdrol I was taking. All of week three had my muscles feeling very tight. Couple that with a higher risk exercise like flat barbell bench and tearing my muscle doesn't sound too out there.
I'll add that I've never had a problem with flat bench in 9 years..Half that time benching low to mid 300's with a natural max of 405x2. Form has always been perfect..